An audio conversation apparatus includes an assignment section for individually assigning units of spatial information which are different from each other, either to parties-to-talk-with each belonging to one of a plurality of predetermined groups, respectively, or to the plurality of predetermined groups, respectively; and a localization section for localizing, in accordance with the units of spatial information assigned by the assignment section, audio data transmitted from outside, and one of a reproduction section connected to the audio conversation apparatus and a reproduction section included in the audio conversation apparatus outputs an audio in accordance with the audio data having been localized by the localization section.